Decibels Flashcards
(13 cards)
1
Q
0 dBu = ? V RMS
A
0.775
2
Q
0 dBV = ? V RMS
A
1
3
Q
0 VU for professional equipment = ? dBu
A
+ 4 dBu
4
Q
0 VU for consumer equipment = ? dBV
A
-10 dBV
5
Q
Formula to calculate V for dB value?
A
10^(delta dB / 20) * 0 dB value
6
Q
Formula to add together dB values
A
L1 + L2 = 10*log(10^(L1/10) + 10^(L2/10))
7
Q
Formula to subtract dB values
A
L2 - L2 = 10*log(10^(L1/10) - 10^(L2/10))
8
Q
Dynamic range formula
A
Bit Depth * 6
9
Q
Dynamic range of 16 bit system
A
6 * 16 = 96 dB
10
Q
Dynamic range of 24 bit system
A
6 *24 = 144 dB
11
Q
Max values in 16/24 bit system formula and answer
A
2^16 or 2^24 = 65536 or 16,777,216
12
Q
10-fold increase in level amounts to ? dB increase
A
10 dB
13
Q
2-fold increase in level amounts to ? dB increase
A
3.01 dB
